Locomotive



Aug. 11, 1936.

W. C. PEYTON LOCOMOTIVE.

s Sheets-Sheet 1 Filed April 19,- 1932 INVENTOR. MZ/zaWZKPg/ZM (W ATTORNEY.

Au 11, 1936. w. c PEYTON LOCOMOTIVE Fiied April 19, 1932 5 Sheets-Sheet 2 INVEVTOR. 7 M l am Ci e/ W2 ATTORNEY.

Aug. 11, 1936. w. c. PEYTON LOCOMOTIVE Filed April 19, 1932 s Sheets-Sheet s WC m ATTORNEY.

Patented Aug. 11, 1 936 2,050,857 LoooMorivE William C. Peyton, New

The Standard Stoker Company, a corporation of Delaware York, N. Y., assignor to Incorporated,

Application April 19, 1932, Serial No. 606,090

14 Claims.

This invention relates to locomotives and has particular reference to novel means for recovering unconsumed fuel particles and reintroducing them into the locomotive firebox.

The principal object of my invention resides in the provision of apparatus for the recovery of unconsumed fuel particles and for their reintroduction into the locomotive firebox in a manner to insure their complete combustion, thereby eliminating the recirculation of the reintroduced fuel particles and insuring a maximum amount'of heat with a minimum expenditure of fuel.

To this end my invention consists in the provision, in a locomotive, of means whereby unconsumed or partially consumed fuel particles escaping from the firebox with the gaseous prod ucts' of combustion are separated, and the provision of a conduit system including a screw conveyor for returning and underfeeding the separated particles to the fire in the firebox.

It further consists in the provision with apparatus of the type described, of a conduit provided with blast means, arranged to transfer recovered fuel particles from the point of separation from the combustion gases to a point adjacent the locomotive firebox, there providing a settling chamber for the fuel and venting means for the fuel transferring blast, and a particularly arranged screw conveyor for delivering the fuel from the settling chamber to the locomotive firebox beneath the fire.

In firing a locomotive, it is evident that the amount of cinders and unconsumed solid particles of fuel escaping over the firebox arch into the smoke box, bears a direct relation to the amount of fuel delivered to the firebox per unit of time, and it is therefore an object of this invention to provide in a stoker fired locomotive, means for returning the expelled cinders and unconsumed fuel particles to the firebox to be consumed there and providing an arrangement of drive mechanism for coordinating the relative rates of the stoker feed mechanism and the cinder return feed mechanism.

It is a further object of this invention to provide a novel magazine for underfeeding recovered cinders and unconsumed fuel particles to the firebox firebed which is arranged to form a support for the firebox grates, and more specifically to form a center grate bearer bar.

A still further object of this invention resides in the provision of apparatus for the recovery of cinders and unconsumed fuel particles from a locomotive firebox and their reintroduction into the firebox, that is simple in design, practical in construction, efiicient in operation and adapted for installation on existing types of locomotives without taking up undue space.

Other and further objects and advantages of the invention reside in the details of construction of the constituent elements and the combination and arrangement of parts, as will become apparent from the appended description and claims and as illustrated in the drawings, in which I Figure 1 is a side elevation of a locomotive showing the smoke box and firebox with the invention properly applied, parts being broken away and parts being shown in section;

Figure 2 is a sectional view on the line 2-2 of Figure 1 with parts broken away;

Figure 3 is a sectional plan view on the line 33 of Figure 1;

Figure 4 is a side elevation of the rearward portion of the locomotive with parts broken away and shown in section, showing the firebox with a modified form of the invention applied;

Figure 5 is a sectional plan view on the line 55 of Figure 4;

Figure 6 is a view on the line 66 of Figure 4 with parts removed;

Figure '7 is a sectional view on the line |-l of Figure 4; and

Figure 8 is a view similar the locomotive with another invention applied thereto.

The invention will be described with particular reference to a locomotive boiler furnace to illustrate'a preferred embodiment thereof. However, it will become obvious as the description proceeds,'that the invention is equally applicable to various types of boiler furnaces in which it is desirable to obtain a maximum amount of heat with a minimum expenditure of fuel.

In the drawings, referring particularly to Figures 1, 2. and 3, the locomotive boiler i is traversed by a plurality of fire tubes or fiues H, extending from the firebox IE to the smokebox l3. The forward end of the smokebox I3 is closed by a forward wall i4 having a door i closing an opening in the forward wall I 4 through which access is afforded to the interior of the smokebox i3, for the insertion and removal of members contained therein. 7

The smokebox i3 is supported on the cylinder saddle casting it in the usual manner. the cylinder I1 being preferably, though not necessarily, formed integral with the saddle casting it. The smokebox i3 is divided into compartments l8 and 19 by a diaphragm or wall, that comprises a rear to Figure 1 showing modification of the 2 imperforate portion 2|], and a foraminous portion or screen 2|. The compartment I9 is in full and free communication with the fiues II, and the compartment 20 is in full and free communication with the inside stack or petticoat pipe 22 and the smoke stack 23, through which the waste gases of combustion are discharged to the atmosphere. The waste gases of combustion carry a relatively large amount of cinders and unconsumed fuel particles which pass over the firebox arch 24, through the her l9. The foraminous wall portion or screen 2| permits the waste gases to pass therethrough into the chamber I8 and out the stack 23 and retains the solid particles. The separated solid particles drop from the screen 2| onto a chute or wall 25 that extends downwardly and rearwardly from the forward wall M of the smokebox and are deposited in the lower forward portion of the smokebox.

Located in the smokebox and below the petticoat pipe 22 is an exhaust steam pipe 26 preferably arranged to communicate with the exhaust cavities 21 in the saddle casting l5 of the locomotive piston cylinders I'I. The floor of the smokebox is in the form of a V-shaped longitudinally extending trough 28 located within and forming part of the saddle casting l5. Forming the floor of the smokebox in this manner concentrates the deposited unconsumed fuel particles and cinders in a narrow channel from which they may be conveniently removed in a suitable manner. At the same time, the troughlike smokebox floor being formed in the saddle casting occupies space which could otherwise not be used for any purpose.

Preferably, the deposited solid particles are discharged from the smokebox through the rearward lower end thereof by a pressure fluid blast issuing from a nozzle 29 located at the forward lower end of the smokebox in the trough 28. To prevent the dissipation of the pressure fluid blast throughout the smokebox, a tubular longitudinal passage 30 is formed in the bottom of the trough in a suitable manner, as by a. curved plate 3|. The curved plate 3| terminates short of the ends of the trough 28 providing openings 32 and 33 through which the deposited solid particles pass into the path of the pressure fluid blast in the trough 28. To prevent the collection of fuel particles on the curved plate 3|, the trough is provided with a transversely extending ridge formed by the oppositely sloping plate members 34 and 35, thereby making the smokebox self cleaning.

A conduit 36, communicating with the rear ward end of the longitudinal passage 30, extends rearwardly from the lower end of the smokebox i3 beneath the boiler Ill towards the firebox l2. At its rearward end, the conduit 36 communicates with a casing or settling chamber 31 which is mounted adjacent the outside sheet of the front water leg 38 of the boiler III. A pairof elbow-shaped conduits 39 and 40, communicating with and preferably, though not necessarily formed with the casing 31, extend rearwardly therefrom beneath the boiler mud ring 4| and open upwardly through the firebox grate 42, whereby the fuel particles are underfed to the fire. By underfeeding or forcing the recovered cinders and unconsumed fuel particles through the grate beneath the fire, their complete combustion is insured not only effecting a saving in fuel consumption, but also eliminating the recirculation of the fuel particles through the flues as would result from feeding the fuel particles over the fire. The

fiues into the chamdischarge ends of the conduits 39 and 40 are pro' vided with the tuyeres 43 and 44 have a plurality of perforations 45.

The casing or settling chamber 31 is divided into chambers 46 and 41 by a screen 48. Cinders and unconsumed fuel particles are discharged from the smokebox by the blast issuing from the nozzle 29, through the conduit 36 and into the casing or settling chamber 31. The carrier fluid passes through the screen 48 into the chamber 41 and is discharged through the pipe 49 into the smoke stack 23. The solid particles separated by the screen 48 are deposited in the bottom of the chamber 46 and are discharged through the conduits 39 and 40 by means of the screw conveyors 50 and 5| into the firebox. In order to secure a sufficient air supply to insure the perfect combustion of the fuel discharged by the conduits 39 and 40, air is supplied to the tuyeres 43 and 44 by the passages 52 and 53 leading from a suitable source of supply, as from the chamber 41.

The screw conveyors 50 and 5| are preferably driven from their respective forward ends through suitable gearing 54 connected by a drive 0 shaft 55 to the stoker engine 56. The engine 56 may be conveniently mounted on the locomotive frame 51 beneath thecab deck 58. The stoker, which may be of any desirable type, is indicated generally by the numeral 59. Only so much of the stoker is shown, as is necessary to acord a proper understanding of the invention. The stoker, which is perferably driven from its rearward end, in a manner well known in the art, comprises a conduit system 60 arranged to receive fuel from a suitable source of supply, as from the locomotive tender (not shown) and to deliver it to the lower portion of the firing opening 6|, where it is received by a distributor plate 62 and projected therefrom into the firebox by a blast of pressure fluid issuing from a distributor head 63.

I The screw conveyors 50 and 5| and the stoker 59 being both driven by the engine 56, it follows that their rates of delivery are coordinated, or in other words, they operate in timed relation. The screw conveyors 50 and 5| may be operated at a rate faster or slower than the stoker conveying means by the use of suitable gearing but their relative rates will remain constant. Thus, when the stoker is delivering relatively large quantities of fuel to the fire, relatively greater quantities of cinders and unconsumed fuel particles are discharged into the smokebox, and since the stoker and the conveyor screws 50 and 5| operate in timed relation, the conveyor screws 50 and 5| will operate more rapidly. to take care of the increased amount of cinders and fuel particles.

In Figures 4, 5, 6 and 7 is shown a modified form of the invention. The front end arrangement, since it is similar to the arrangement of the preferred embodiment has not been shown in the drawings nor will it .be necessary. to again describe it. The rear or firebox arrangement includes a U shaped magazine ll) extending longitudinally and centrally of the firebox 1| below the level of the fire. The magazine 10, which is preferably formed with the settling chamber 12, communicates therewith through the integrally formed neck member 13. The settling chamber 12 is secured in a suitable manner from the boiler '|4 through the flanges I5, and the magazine 10 is secured at its rearward end in a desirable manner to the boiler mud ring 16.

The magazine 10 is provided with a plurality of spaced lugs 11 projecting outwardly from the upper marginal edge of the magazine side walls. The lugs 17 form supports for one end of the grate sections 18, the other end being supported from the lugs 79. The magazine 10in effect forms a center grate bearer bar, thus serving the dual purpose of supporting the grate sections 18 and housing the screw conveyor and requiring no more space than would ordinarily be taken up by a grate bearer bar.

The flight of the screw conveyor 80 not only decreases in diameter towardsits rearward end, but the space between each turn decreases progressively from front to rear, whereby the screw conveyor is given greater lifting power to discharge the fuel received from the settling chamber I2 into the firebox.

There is also shown in this modification of the invention an optional mode of driving the cinder and unconsumed fuel particle conveyor. An independent motor 8l is provided at the forward end of the conveyor, which may be suitably secured to the settling chamber l2.

Another modification of the invention is illustrated in Figure 8, in which there is provided a screw conveyor 85, disposed in the trough portion of the cylinder saddle casting, these parts being best illustrated in Figure 2 at 28 and I6 respectively, and extending rearwardly through the conduit 85. Since the blast used in the previously described forms of the invention for discharging the cinders and unconsumed fuel particles from the smokebox towards the firebox is replaced in this form of the device by the screw conveyor 85, the settling chamber and venting means are dispensed with, the cinders and fuel particles being discharged from the rearward end of the screw conveyor directly onto the flights of the offset discharge screw conveyor81. The screw conveyor 81 is mounted in a magazine 88, which, in its details of construction is similar to the magazine 70, described in detail in connection with the modification illustrated in Figures 4, 5, 6 and 7.

The screw conveyor 85 is preferably driven from its forward end by a suitable prime mover 89, as for example, a Dake engine, and the screw conveyor 81 is also driven from its forward end through the shafting and gearing 9|.

I claim:

1. The combination in a locomotive, of a firebox having a grate for supporting a firebed, a smokebox for receiving the products of combustion from said firebox, means in said smokebox for separating solid particles from gaseous products of combustion, a discharge conduit opening into said firebox through said grate adjacent the forward end thereof, a transfer conduit for said solid particles extending from said smokebox to said discharge conduit, and means in said discharge conduit arranged to deliver the solid particles of fuel upwardly into the firebed on the grate.

2. The combination in a locomotive, of a firebox having a grate for supporting a firebed, a smokebox for receiving the products of combustion from said firebox, means in said smokebox for separating solid particles from gaseous products of combustion, a conduit system for said solid particles extending rearwardly from said smokebox and opening into said firebox through said grate, and screw conveying means in said conduit system delivering said solid particles into the firebed on the grate.

3. The combination in a locomotive, of a firebox having a grate for supporting a firebed, a

smokebox for receiving the products of combustion from said firebox, means in said smokebox for separating solid particles from gaseous products of combustion, a plurality of discharge conduits opening into said firebox through said grate, means in each discharge conduit arranged to deliver the solid particles of fuel into the firebed on the grate, and a conduit for said solid particles extending from said smokebox to said discharge conduits. Y

4- he comb nat on n a locomotive, f a fir x av n a a eor su po n a fi d a m k box fo ec ivin t pr u t of combustion from said firebox, means in said smokebox for s paratin solid p c es f om gaseous p u of combustion, a plurality of discharge conduits opening into said firebox through said grate, a screw conveyor in each of said discharge conduits delivering said solid particles into the firebed on the grate, a transfer conduit for said solid particles extending from said smokebox to said discharge conduits and means for transferring said solid particles through said transfer conduit to said discharge conduits.

5. The combination in a locomotive, of a firebox having a grate for supporting a firebed, a smokebox for receiving the products of combustion from said firebox, means in said smokebox for separating solid particles from gaseous products of combustion, a transfer conduit for said solid particles extending from said smokebox to a point adjacent the forward end of said firebox a pressure fluid blast nozzle arranged to project said solid particles through said transfer conduit, a discharge conduit opening into said firebox through said grate and screw conveying means in said conduit arranged to receive said solid particles from said transfer conduit, said screw conveying means extending rearwardly into the firebox and delivering said solid particles into the firebed on the grate.

6. In a locomotive provided with a firebox having a grate and a smokebox for receiving the products of combustion from said firebox, the combination of means in said smokebox for separating solid particles from gaseous products of combustion, a conduit system for said solid particles extending rearwardly from said smokebox and open-ing into said firebox through said grate, a casing. interposed in said conduit system, a nozzle arranged to issue a pressure fluid blast toward said casing, the pressure fluid issued from said nozzle constituting a carrier fluid for conveying the solid particles to said casing, means in said casing separating said solid particles from said carrier fluid, said casing being provided with means for venting the separated carrier fluid and screw conveying means in said conduit system for delivering said solid particles from said casing to said firebox.

7. In a locomotive provided with a firebox having a grate and a smokebox for receiving the products of combustion from said firebox, the combination of means in said smokebox for separating solid particles from gaseous products of combustion, a casing forward of and adjacent said firebox, a discharge conduit extending rearwardly from said casing and opening into said firebox through said grate, a tube extending from said smokebox to said casing, means arranged to issue blasts of pressure fluid through said tube into said casing, the pressure fluid issued from said means comtituting a carrier fluid for conveying the solid particles tosaid casing, means in said casing for separating said solid particles from said carrier fluid, said casing being provided with means for venting said separated carrier 'fluid, and a screw conveyor arranged to deliver said solid particles from said casing through said discharge conduit into the firebox. a a

8. The combination in a locomotive provided with a stoker, of a firebox having a grate, 'a smokebox for receiving the products of combustion from said firebox, means in said smokebox for separating solid particles from gaseous products of combustion, a conveying system for returning said solid particles to said firebox, said conveying system including screw means arranged to introduce fuel to the grate from below the same, and means for operating said stoker and said screw conveying means in timed relation.

9. In a locomotive having a firebox provided with a grate, the combination of stoker mechanism including means for conveyingsolid fuel to and projecting the same into the firebox, means for separating solid particles from the eflluent combustion products of the firebox, conveying means for returning said solid particles to the firebox through said grate, and drive mechanism arranged to coordinate the rate of delivery of said last named conveying means and said stoker conveying means.

10. In a locomotive having a firebox provided with a grate, the combination of stoker mechanism including a screw conveyor for delivering solid fuel to and projecting the same into the firebox, means for separating solid particles from the eflluent combustion products of the firebox, conveying means including a screw conveyor for returning said solid particles to the firebox through said grate, and 'drive mechanism arranged to coordinate the rate of delivery of said last named screw conveyor and said stoker screw conveyor.

11. The combination in a locomotive, of a firebox having a grate for supporting a firebed, a smokebox for receiving the products of combustion from said firebox, means in said smokebox for separating solid particles from gaseous products of combustion, a conveying system for said solid particles extending rearwardly from said smokebox and opening into said firebox through said grate and screw means in said conveying a locomotive, of a firebox havinga grate for supporting a firebed, a 5

smokebox for receiving the products of combustion from said firebox, means in said smokebox for separating solid particles from gaseous products of combustion, screw conveying means arranged to deliver said solid particles from said smokebox into said firebox-said screw conveying means comprising a forward section extending rearwardly from said smokebox to said firebox and a rearward section extending rearwardly from-said forward section into said firebox beneath the level of the firebed on said grate, the forward end of said rearward section being offset in a plane below the rearward end of said forward section.

13. -The combination in a locomotive, of a firebox having a grate for supporting a firebed, a smokebox for receiving the products of combustion from said firebox, means in said smokebox for separating solid particles from gaseous products of combustion, screw conveying means arranged to deliver said solid particles from said smokebox into said firebox, said screw conveying means comprising a forward section extending rearwardly from said smokebox to said firebox and a rearward section extending rearwardly from said forward section into said firebox beneath the level of the firebed on said grate, the forward end of said rearward section being offset'in a plane below the rearward end of said forward section and means for driving said rearward and said forward conveying sections from their'respective forward ends.

'14. The combination in a locomotive, of a firebox having a grate for supporting a firebed, a smokebox for receiving the products of combustion from said firebox, means in said smokebox for separating solid particles from gaseous products of combustion, screw conveying means arranged to deliver said solid particles from said smokebox into "the firebed on said grate, and a prime mover fixed at the forward end of the locomotive for operating said screw conveying means from its forward end.

WILLIAM C. PEYTON.

CERTIFICATE OF CORRECTION.

Patent No. 2,050,857.

WILLIAM C. PEYTON.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, second column, line 2, for the word "have" read having; line 50, for "acord" read afford: and line 52, for "perferably" read preferably; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

igned and sealed this 29th day of September, A. D. 1936.

Henry Van Arsdale (Seal) Acting Commissioner of Patents,

August 11, 1936. 

